.overview-content .a {background-image: url(./img/a.jpg);}
.overview-content .b .left {background-image: url(./img/b.png);}
.overview-content .e .right:after {background-image: url(./img/e1.jpg);}
.overview-content .e .left:after {background-image: url(./img/e2.jpg);}
.overview-content .f {background-image: url(./img/f.jpg);}
.overview-content .m {background-image:url(./img/m.jpg);height:56.75em;}
@media (max-width: 736px) {
  .overview-content .text h2, .overview-content .text p, .overview-content .text h4 {text-align: left;}
  .overview-content .text h4 {padding: 0 6% 0.5em;}
  .overview-content .a {background-image: url(./m/a.jpg);}
  .overview-content .d .d1, .overview-content .d .d2 {text-align: center;}
  .overview-content .e {background-color: #f7fdff;}
  .overview-content .e .right:after {background-image: url(./m/e1.jpg);}
  .overview-content .e .left:after {background-image: url(./m/e2.jpg);}
  .overview-content .f {background-image: url(./m/f.jpg);}
  .overview-content .m {background-image: url(./m/m.jpg);height:auto;}
}